123980796 has 72 divisors (see below), whose sum is σ = 334034064. Its totient is φ = 38638080.

The previous prime is 123980789. The next prime is 123980797. The reversal of 123980796 is 697089321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123980797) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105291 + ... + 106461.

It is an arithmetic number, because the mean of its divisors is an integer number (4639362).

Almost surely, 2^123980796 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123980796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167017032).

123980796 is an abundant number, since it is smaller than the sum of its proper divisors (210053268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123980796 is a wasteful number, since it uses less digits than its factorization.

123980796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371 (or 1366 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 123980796 is about 11134.6664072167. Note that the first 3 decimals coincide. The cubic root of 123980796 is about 498.6373510828.

The spelling of 123980796 in words is "one hundred twenty-three million, nine hundred eighty thousand, seven hundred ninety-six".